This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A267492 #16 Dec 19 2017 18:36:14 %S A267492 22,1011112,1011113,1111213,10311233,101112213 %N A267492 Autobiographical numbers in base 4: numbers which are fixed or belong to a cycle under the operator T. %C A267492 The T operator numerically summarizes the frequency of digits 0 through 3 in that order when they occur in a number. The numbers and the frequency are written in base 4. %C A267492 These are all autobiographical numbers in base 4 which lead to a fixed-point or belong to a cycle. However, in base 4 there are no cycles of length greater than 1, that is, all the terms are fixed-points. %D A267492 Antonia Münchenbach and Nicole Anton George, "Eine Abwandlung der Conway-Folge", contribution to "Jugend forscht", 2016 %H A267492 Andre Kowacs, <a href="https://arxiv.org/abs/1708.06452">Studies on the Pea Pattern Sequence</a>, arXiv:1708.06452 [math.HO], 2017. %e A267492 1011112 contains one 0, five (11 in base 4) 1's, and one 2, so T(1011112) = 1 0 11 1 1 2, and this is fixed under T. %Y A267492 Cf. A047841, A267491. %K A267492 nonn,base,fini,full %O A267492 1,1 %A A267492 _Antonia Münchenbach_, Jan 16 2016